package choi;



public class Circle {
	
	
    double radius;
    static final double PI = 3.14;
	Circle(double s){
		radius=s;
		
	}
	
	Circle(){
		radius=0.0;
	}
	
	public void setradius(double a){
		radius=a;
	}
	
	public double getradius(){
		return radius;
	}
	public double square(){
		double two = radius*radius;
		return two;
	}
	public double getArea(){
		double moon = square()*3.14;
		return moon;
	}
	public double getperimeter(){
		double soon = radius*2*3.14;
		return soon;
	}
	public double getPI(){
		return PI;
	}
	
//	public static void main(String args[]){
//		//Circle c = new Circle(5);
//
//		getPI();
//		square(10,0);
//	}
}

